/**
 *   Copyright (c) fanguangping. All rights reserved.
 *   The use and distribution terms for this software are covered by the
 *   Eclipse Public License 1.0 (http://opensource.org/licenses/eclipse-1.0.php)
 *   which can be found in the file epl-v10.html at the root of this distribution.
 *   By using this software in any fashion, you are agreeing to be bound by
 * 	 the terms of this license.
 *   You must not remove this notice, or any other, from this software.
 **/
package org.jfunny.core.sys.impl.clojure;

import org.jfunny.core.dfa.DFA;
import org.jfunny.core.ds.Arg;
import org.jfunny.core.ds.Statement;
import org.jfunny.core.sys.SysEvalable;
import org.jfunny.core.sys.SysLoader;
import org.jfunny.core.util.StringUtil;

/**
 * 
 * @author fanguangping
 *
 */
public class SysNamespaceMapping implements SysEvalable{
	
	@Override
	public String eval(Statement statement) {
		String namespace = SysFunctionHelper.getArgContent(statement, 0);
		Arg expression = SysFunctionHelper.getArg(statement, 1);
		
		String valueExpr = DFA.getInstance().match(SysLoader.findNamespace(namespace), expression);

		String originalFunc = StringUtil.substringAfter(valueExpr, "(");
		originalFunc = originalFunc.trim();
		originalFunc = StringUtil.substringAfter(originalFunc, "/");

		StringBuffer buffer = new StringBuffer();
		buffer.append("(");
		buffer.append(namespace);
		buffer.append("/");
		buffer.append(originalFunc);

		return buffer.toString();
	}
}
